Improvement in car-stoves



2 Sheets-Sheet 1.-

I. H. PRENTICE.

CAR-STOVE,

Patented Feb.27, 1877.

Jkazvifar N.PETERS. FHOTO-LITHOGHAFHER, WASHINGTON, D. Cv

2 Sheets-Sheet Z.

J. H. PRENTICE.

CAR-STOVE.

No.187,774. Patented Feb. 27, 1877.

N. PETERS. PflOTO-LITMOGRAFNER, WASHINGTON. I; C.

UNITED STA ES PATENT QFFIGE.

JAMES H. PRENTIGE, OF SAGINAW, MICHIGAN.

IMPROVEMENT IN CAR-STOVES.

Specification forming part of Letters Patent No. 187,774, dated February27, 1877; application filed February 16, 1877.

To all whom it may concern.- Be it known that I, JAMES H. PBENTIOE, ofSaginaw, in thecounty of Saginaw and State of Michigan, have invented anew and useful Improvement in Railway-Oar Stoves, of which the followingis a specification, reference being had to the accompanying drawlugs.

The invention relates to an improved railway-car stove, and is intendedto provide a device which will insure'the extinguishment of the fire inthe stove in case of collision or any undue inclination of the car. i

The invention consists in the devices hereinafterspecifically described.7

Figure l is a central vertical section of a device embodying theelements ofthe invention. Fig. 2 is a like view of the same with thegrate and attachments lowered. Fig. 3 is a transverse section of same.Fig. 4 is a section of the rod X; and Fig. 5 is a detached view of theplate H, with connections. Fig. 6 is a detached view, showing the buttonand washer on the arm of the rod L.

In the accompanying drawings, A represents the platform or fioor of acar. B represents the water-tank, which is secured firmly to the floor.Inflthe present instance the bottom of this tank is flat, but preferablyit should be made conical to a center, whereat a plug and an escape-pipemay be provided, by means of which the tank can be emptied.- The sidesof the tank are circular, and extend upward, and are provided with thecone-shaped ears or studs D, for purposes hereinafter de scribed.

Upon the upper edgeof the sides of the tank B rests the annularsteam-chamber E, the dependent flange a of which extends be low andclosely encompasses the upper portion oi thetank B, securing the chamberfirmly thereto. The chamber E is provided, on its under side, with theapertures b, adjacent to the flange a, the chamber being supplied withthe exit-pipe d, to lead the steam out of the chamber to any desiredpoint. The upper part of the inner aperture of the chamber is furnishedwith the vertical flange e, which extends upward and encompasses thebase of the stove or heat-chamber F. The grate'or other device forsustaining the fuel is placed upon the upper part of" an annular rim, f,which forms the ash pit or pan. The base of the rim f is secured uponthe plate H, the diameter of which is less than that of the flange a,but greater than the distance between the apertures 11 on opposite sidesof the chamber.

Thus, when the plate is drawn up in contact with the base of the chamberE, it covers the apertures, and yet leaves a space, for the reception ofthe upper edge of the tank B, be-

tween its circumference and the inner wall of the flange 0.

Now, as the diameter of the devices supporting the plate be removed, theplate itself, the ash-pit, grate, and fuel thereon will instantly beprecipitated into the water in the tank below.

An aperture, I, is formed at the center of the plate H, to permit theplate and its superposed devices to speedily sink in the water in thetank when the plate falls, and is provided with the valve or cover h,which is of greater area than the aperture I, the edges of which areproperly recessed to receive the edges of l the cover or valve h, whichis thus sustained with its surface flush with the plate H; but when theplate falls, striking the water, the

valve is instantly elevated, and thus any possible buoyancy of the plateor its'attachments preventedu V The grate is provided with the rods L,hinged to its upper edges on opposite sides. These rods extend upwardbetween the easing and outside of the heat-chamber, and are provided ontheir upper ends with the arms Z, which extend through the slots M inthe .outside of the stove, which slots extend downward to such a pointasnot to impede the descent of the plate H. On the outside of the stovethe arms lare provided with thebuttons m, to prevent their retraction, awasher, m, being provided on the inside of the casing F to keep the rodL in place when moving.

The heat-chamber F is conical -in structure,

and provided at its upper end with a flue, n,

for the escape of the products of combustion. The device is providedwith suitable doors for introducing the fuel and removing the ashes. I

. Apertures N, which penetrate the flange a the plate H is less- -thanthat of the tank B, it is obvious that, it

and the upper edge of the tank, serve to receive the arms P on the bailR. These arms protrude beyond the inner edge of the tank B, and serve tothe edge of the grate is brought up against the edge of the lining ofthe stove, preventing the escape of fuel into the. chamber between thelining and exterior of the stove. It is obvious that when these arms Pare re moved the plate H, fire-box, grate, and fuel will be precipitatedinto the tank, and the fire effectually and at once extinguished.

The bail R is of the usual form, and at its apex is provided the loop10, which, when the bail is in operation, is about on a level with thebase of the tank, whence the arms of the bail pass upward, and partiallyencompass the tank, passing under the conical studs D. Thus, when theloop of-the bail is elevated, the arms ride up the inclined sides of thestuds, and are spread thereby, thus withdrawing the arms P, and allowingthe plate to fall, as aforesaid. I

The loop o is linked to the lower end of the draw-rod t, its upper endbeing linked in an eye in one end of the lever T, which is piv oted inthe extension 1; of one of the standards of the frame V, over the topbrace of which the lever passes,its opposite end being pivoted inthe-upper end of a vertical shaft, W, which extends directly downwardthrough the top brace of the frame, and through the auxiliary brace 00,which, at its center, is formed into the arch y, below which the shaft Wis encompassed by a spring, 10, which bears upon the arch'y above, andupon the upper surface of the head 2 below, the under surface of thehead being concave to receive the upper end of the shaft X, whichextends downward through an enlarged aperture in the rockingbrace a. asuitable distance, and terminates in the pendulum Z, the weight of theshaft and pendulum being sustained by the collar bf upon the 'shaftabove where it passes through the brace a, the aperture and collar beingproperly beveled, as shown.

Now, as the pendulum is suspended, it is obvious that if the car towhich the frame is fixed be unduly inclined or severely jarred, thependulum will vibrate. the head 2, and permit the spring to depress theshaft W, which tilts the lever T, drawing up the rod t and the loopp ofthe bail It, thus I causing its arms to spread, with the resultaforesaid.

What I claim as my invention, and desire to secure by Letters Patent,'is

l. A safety stove in which the device Whereon the grate is placed issustained by removable supports above a tank containing extinguishingmaterial, substantially as set forth.

2. A safety-stove in which the devices sustaining the grate or fire-bedare retracted by the gravitation of a pendulum, substantially asexpressed.

3. In a safety-stove, a grate su'stained'on sustain the plate H, so thatThis will detach removable supports above an open tank of extinguishingmaterial, substantially as set forth.

4. A' safety-stove in which the devices sustaining the grate, with thefuel thereon, may be caused to descend into a tank of extinguishingmaterial, substantially as set forth.

5. In a safety-stove, a tank placed below, and capable of receiving, thedevices sustaining the grate and fuel, substantially as set forth.

6. In a safety-stove, a stud having inclined sides, or an inclined side,for the purpose of spreading the arms of the bail, as set forth.

7. In a safety-stove, the conical stud D, for spreading the arms of thebail, as set forth.

8. The steam-chamber B, provided with the apertures b and flanges a-ande, as set forth.

9. The steam-chamber E, provided with the inlet'apertures b andoutlet-pipe d, in combination with the tank B, substantially as speci:fied.

. 10. The plate H, for the purpose of sustaining the grate and ash-pit,and provided with the aperture I, tofpermit the plate and" itssuperposed devices to sink readily in the tank when descending,substantially as set forth.

11. The plate H, provided with the aperture I and valve-h, substantiallyas and for the purpose specified.

12. The grate, preserved in proper horizony tal position by the slidingrods L,'in combination with the heat-chamber, having the slots M, asspecified.

13. The tank B and flange a, provided with the aperture N, incombination with the arms P, substantially as specified.

14. In a safety-stove, a movable device for supporting a plate carryingthe grate, the plate and grate made capable of descent.I as specified.

15. The bail R, in combination with the studs D and plate H, as setforth. i

16. The bail R, in combination with the studs D and plate H, andconnected with any suitable mechanism for raising the loop 10, as setforth. 1

17. The shaft W, provided with the spring to and head 2, in combinationwith the shaft X, provided with the pendulum Z, as specified.

18. In a'device for operating a safety-stove, a pendulous' shaftprovided with a pendulum, and supporting the pressure of a trippingdevice, so arranged that when the support of the stove is tilted thependulum shall move the end of the shaft from under the device itsustains, and allow said device to drop or descend, as specified. V

In testimony that I claim the foregoing improvement in railway-carstoves, as above described, I have hereunto set my hand this 16th day ofFebruary, 1877.

Witnesses: JAMES H. PRENTIGE.

J. H. HERRON, JOHN T. BURCH.

